一种基于水平圆形阵列的模态强度分布估计算法

IF 1.3 3区物理与天体物理 Q3 ACOUSTICS

Journal of Theoretical and Computational Acoustics Pub Date : 2020-03-01 DOI:10.1142/S2591728519500063

Li Peng, Zhang Xinhua, Liu Bing, Li Lan-rui, Li Jun

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引用次数: 0

摘要

在浅水波导中，声信号的正模信息在定位研究中起着重要作用。提出了一种基于水平圆形阵列的模态强度分布提取算法。利用各模态的水平波数，利用模态域波束形成估计声信号的模态强度分布。通过理论推导、数据仿真和实验数据验证了基于圆阵的提取算法的可行性以及与线阵提取算法相比的优越性。最后提出了基于模态强度分布的干扰抑制应用:水面干扰抑制，并通过理论推导和仿真实验验证了干扰抑制算法的有效性。

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A Modal Intensity Distribution Estimation Algorithm Based on Horizontal Circular Array

In shallow-water waveguide, the normal mode information of acoustic signals plays an important role in localization research. In this paper, an extraction algorithm of modal intensity distribution based on horizontal circular array is proposed. By using the horizontal wavenumber of each mode, the modal domain beamforming is used to estimate the modal intensity distribution of the acoustic signal. The theoretical derivation, data simulation and experimental data are used to verify the feasibility of the algorithm based on circular array and the superiority compared with the line array extraction algorithm. At the last part of the paper, an application based on modal intensity distribution is proposed: water surface interference suppression, and the effectiveness of the interference suppression algorithm is verified from theoretical derivation and simulation experiments.

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来源期刊

Journal of Theoretical and Computational Acoustics Computer Science-Computer Science Applications

CiteScore

2.90

自引率

42.10%

发文量

期刊介绍： The aim of this journal is to provide an international forum for the dissemination of the state-of-the-art information in the field of Computational Acoustics. Topics covered by this journal include research and tutorial contributions in OCEAN ACOUSTICS (a subject of active research in relation with sonar detection and the design of noiseless ships), SEISMO-ACOUSTICS (of concern to earthquake science and engineering, and also to those doing underground prospection like searching for petroleum), AEROACOUSTICS (which includes the analysis of noise created by aircraft), COMPUTATIONAL METHODS, and SUPERCOMPUTING. In addition to the traditional issues and problems in computational methods, the journal also considers theoretical research acoustics papers which lead to large-scale scientific computations.